<html> <head> <script type = "text/javascript" src = "https://d3js.org/d3.v4.min.js"></script> </head> <body> <h3>D3 array API</h3> <script> var array = [{one: 1}, {one: 10}]; console.log(d3.scan(array, function(a, b) { return a.one - b.one; })); // 0 console.log(d3.scan(array, function(a, b) { return b.one - a.one; })); // 1 </script> </body> </html>
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